/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

package org.apache.druid.server.mocks;

import org.apache.druid.java.util.common.RE;

import java.io.IOException;
import java.io.InputStream;
import java.util.function.Supplier;

public class ExceptionalInputStream extends InputStream
{
  private final Supplier<Exception> supplier;

  public ExceptionalInputStream(
      Supplier<Exception> supplier
  )
  {
    this.supplier = supplier;
  }

  @Override
  public int read() throws IOException
  {
    final Exception throwMe = supplier.get();
    if (throwMe instanceof RuntimeException) {
      throw (RuntimeException) throwMe;
    }
    if (throwMe instanceof IOException) {
      throw (IOException) throwMe;
    }
    throw new RE(throwMe, "wrapped because cannot throw typed exception");
  }
}
